diff options
Diffstat (limited to 'src/3rdparty/libwebp/src/dsp/lossless_neon.c')
| -rw-r--r-- | src/3rdparty/libwebp/src/dsp/lossless_neon.c | 395 |
1 files changed, 384 insertions, 11 deletions
diff --git a/src/3rdparty/libwebp/src/dsp/lossless_neon.c b/src/3rdparty/libwebp/src/dsp/lossless_neon.c index 6faccb8..1145d5f 100644 --- a/src/3rdparty/libwebp/src/dsp/lossless_neon.c +++ b/src/3rdparty/libwebp/src/dsp/lossless_neon.c @@ -139,6 +139,357 @@ static void ConvertBGRAToRGB(const uint32_t* src, #endif // !WORK_AROUND_GCC + +//------------------------------------------------------------------------------ +// Predictor Transform + +#define LOAD_U32_AS_U8(IN) vreinterpret_u8_u32(vdup_n_u32((IN))) +#define LOAD_U32P_AS_U8(IN) vreinterpret_u8_u32(vld1_u32((IN))) +#define LOADQ_U32_AS_U8(IN) vreinterpretq_u8_u32(vdupq_n_u32((IN))) +#define LOADQ_U32P_AS_U8(IN) vreinterpretq_u8_u32(vld1q_u32((IN))) +#define GET_U8_AS_U32(IN) vget_lane_u32(vreinterpret_u32_u8((IN)), 0); +#define GETQ_U8_AS_U32(IN) vgetq_lane_u32(vreinterpretq_u32_u8((IN)), 0); +#define STOREQ_U8_AS_U32P(OUT, IN) vst1q_u32((OUT), vreinterpretq_u32_u8((IN))); +#define ROTATE32_LEFT(L) vextq_u8((L), (L), 12) // D|C|B|A -> C|B|A|D + +static WEBP_INLINE uint8x8_t Average2_u8_NEON(uint32_t a0, uint32_t a1) { + const uint8x8_t A0 = LOAD_U32_AS_U8(a0); + const uint8x8_t A1 = LOAD_U32_AS_U8(a1); + return vhadd_u8(A0, A1); +} + +static WEBP_INLINE uint32_t ClampedAddSubtractHalf_NEON(uint32_t c0, + uint32_t c1, + uint32_t c2) { + const uint8x8_t avg = Average2_u8_NEON(c0, c1); + // Remove one to c2 when bigger than avg. + const uint8x8_t C2 = LOAD_U32_AS_U8(c2); + const uint8x8_t cmp = vcgt_u8(C2, avg); + const uint8x8_t C2_1 = vadd_u8(C2, cmp); + // Compute half of the difference between avg and c2. + const int8x8_t diff_avg = vreinterpret_s8_u8(vhsub_u8(avg, C2_1)); + // Compute the sum with avg and saturate. + const int16x8_t avg_16 = vreinterpretq_s16_u16(vmovl_u8(avg)); + const uint8x8_t res = vqmovun_s16(vaddw_s8(avg_16, diff_avg)); + const uint32_t output = GET_U8_AS_U32(res); + return output; +} + +static WEBP_INLINE uint32_t Average2_NEON(uint32_t a0, uint32_t a1) { + const uint8x8_t avg_u8x8 = Average2_u8_NEON(a0, a1); + const uint32_t avg = GET_U8_AS_U32(avg_u8x8); + return avg; +} + +static WEBP_INLINE uint32_t Average3_NEON(uint32_t a0, uint32_t a1, + uint32_t a2) { + const uint8x8_t avg0 = Average2_u8_NEON(a0, a2); + const uint8x8_t A1 = LOAD_U32_AS_U8(a1); + const uint32_t avg = GET_U8_AS_U32(vhadd_u8(avg0, A1)); + return avg; +} + +static uint32_t Predictor5_NEON(uint32_t left, const uint32_t* const top) { + return Average3_NEON(left, top[0], top[1]); +} +static uint32_t Predictor6_NEON(uint32_t left, const uint32_t* const top) { + return Average2_NEON(left, top[-1]); +} +static uint32_t Predictor7_NEON(uint32_t left, const uint32_t* const top) { + return Average2_NEON(left, top[0]); +} +static uint32_t Predictor13_NEON(uint32_t left, const uint32_t* const top) { + return ClampedAddSubtractHalf_NEON(left, top[0], top[-1]); +} + +// Batch versions of those functions. + +// Predictor0: ARGB_BLACK. +static void PredictorAdd0_NEON(const uint32_t* in, const uint32_t* upper, + int num_pixels, uint32_t* out) { + int i; + const uint8x16_t black = vreinterpretq_u8_u32(vdupq_n_u32(ARGB_BLACK)); + for (i = 0; i + 4 <= num_pixels; i += 4) { + const uint8x16_t src = LOADQ_U32P_AS_U8(&in[i]); + const uint8x16_t res = vaddq_u8(src, black); + STOREQ_U8_AS_U32P(&out[i], res); + } + VP8LPredictorsAdd_C[0](in + i, upper + i, num_pixels - i, out + i); +} + +// Predictor1: left. +static void PredictorAdd1_NEON(const uint32_t* in, const uint32_t* upper, + int num_pixels, uint32_t* out) { + int i; + const uint8x16_t zero = LOADQ_U32_AS_U8(0); + for (i = 0; i + 4 <= num_pixels; i += 4) { + // a | b | c | d + const uint8x16_t src = LOADQ_U32P_AS_U8(&in[i]); + // 0 | a | b | c + const uint8x16_t shift0 = vextq_u8(zero, src, 12); + // a | a + b | b + c | c + d + const uint8x16_t sum0 = vaddq_u8(src, shift0); + // 0 | 0 | a | a + b + const uint8x16_t shift1 = vextq_u8(zero, sum0, 8); + // a | a + b | a + b + c | a + b + c + d + const uint8x16_t sum1 = vaddq_u8(sum0, shift1); + const uint8x16_t prev = LOADQ_U32_AS_U8(out[i - 1]); + const uint8x16_t res = vaddq_u8(sum1, prev); + STOREQ_U8_AS_U32P(&out[i], res); + } + VP8LPredictorsAdd_C[1](in + i, upper + i, num_pixels - i, out + i); +} + +// Macro that adds 32-bit integers from IN using mod 256 arithmetic +// per 8 bit channel. +#define GENERATE_PREDICTOR_1(X, IN) \ +static void PredictorAdd##X##_NEON(const uint32_t* in, \ + const uint32_t* upper, int num_pixels, \ + uint32_t* out) { \ + int i; \ + for (i = 0; i + 4 <= num_pixels; i += 4) { \ + const uint8x16_t src = LOADQ_U32P_AS_U8(&in[i]); \ + const uint8x16_t other = LOADQ_U32P_AS_U8(&(IN)); \ + const uint8x16_t res = vaddq_u8(src, other); \ + STOREQ_U8_AS_U32P(&out[i], res); \ + } \ + VP8LPredictorsAdd_C[(X)](in + i, upper + i, num_pixels - i, out + i); \ +} +// Predictor2: Top. +GENERATE_PREDICTOR_1(2, upper[i]) +// Predictor3: Top-right. +GENERATE_PREDICTOR_1(3, upper[i + 1]) +// Predictor4: Top-left. +GENERATE_PREDICTOR_1(4, upper[i - 1]) +#undef GENERATE_PREDICTOR_1 + +// Predictor5: average(average(left, TR), T) +#define DO_PRED5(LANE) do { \ + const uint8x16_t avgLTR = vhaddq_u8(L, TR); \ + const uint8x16_t avg = vhaddq_u8(avgLTR, T); \ + const uint8x16_t res = vaddq_u8(avg, src); \ + vst1q_lane_u32(&out[i + (LANE)], vreinterpretq_u32_u8(res), (LANE)); \ + L = ROTATE32_LEFT(res); \ +} while (0) + +static void PredictorAdd5_NEON(const uint32_t* in, const uint32_t* upper, + int num_pixels, uint32_t* out) { + int i; + uint8x16_t L = LOADQ_U32_AS_U8(out[-1]); + for (i = 0; i + 4 <= num_pixels; i += 4) { + const uint8x16_t src = LOADQ_U32P_AS_U8(&in[i]); + const uint8x16_t T = LOADQ_U32P_AS_U8(&upper[i + 0]); + const uint8x16_t TR = LOADQ_U32P_AS_U8(&upper[i + 1]); + DO_PRED5(0); + DO_PRED5(1); + DO_PRED5(2); + DO_PRED5(3); + } + VP8LPredictorsAdd_C[5](in + i, upper + i, num_pixels - i, out + i); +} +#undef DO_PRED5 + +#define DO_PRED67(LANE) do { \ + const uint8x16_t avg = vhaddq_u8(L, top); \ + const uint8x16_t res = vaddq_u8(avg, src); \ + vst1q_lane_u32(&out[i + (LANE)], vreinterpretq_u32_u8(res), (LANE)); \ + L = ROTATE32_LEFT(res); \ +} while (0) + +// Predictor6: average(left, TL) +static void PredictorAdd6_NEON(const uint32_t* in, const uint32_t* upper, + int num_pixels, uint32_t* out) { + int i; + uint8x16_t L = LOADQ_U32_AS_U8(out[-1]); + for (i = 0; i + 4 <= num_pixels; i += 4) { + const uint8x16_t src = LOADQ_U32P_AS_U8(&in[i]); + const uint8x16_t top = LOADQ_U32P_AS_U8(&upper[i - 1]); + DO_PRED67(0); + DO_PRED67(1); + DO_PRED67(2); + DO_PRED67(3); + } + VP8LPredictorsAdd_C[6](in + i, upper + i, num_pixels - i, out + i); +} + +// Predictor7: average(left, T) +static void PredictorAdd7_NEON(const uint32_t* in, const uint32_t* upper, + int num_pixels, uint32_t* out) { + int i; + uint8x16_t L = LOADQ_U32_AS_U8(out[-1]); + for (i = 0; i + 4 <= num_pixels; i += 4) { + const uint8x16_t src = LOADQ_U32P_AS_U8(&in[i]); + const uint8x16_t top = LOADQ_U32P_AS_U8(&upper[i]); + DO_PRED67(0); + DO_PRED67(1); + DO_PRED67(2); + DO_PRED67(3); + } + VP8LPredictorsAdd_C[7](in + i, upper + i, num_pixels - i, out + i); +} +#undef DO_PRED67 + +#define GENERATE_PREDICTOR_2(X, IN) \ +static void PredictorAdd##X##_NEON(const uint32_t* in, \ + const uint32_t* upper, int num_pixels, \ + uint32_t* out) { \ + int i; \ + for (i = 0; i + 4 <= num_pixels; i += 4) { \ + const uint8x16_t src = LOADQ_U32P_AS_U8(&in[i]); \ + const uint8x16_t Tother = LOADQ_U32P_AS_U8(&(IN)); \ + const uint8x16_t T = LOADQ_U32P_AS_U8(&upper[i]); \ + const uint8x16_t avg = vhaddq_u8(T, Tother); \ + const uint8x16_t res = vaddq_u8(avg, src); \ + STOREQ_U8_AS_U32P(&out[i], res); \ + } \ + VP8LPredictorsAdd_C[(X)](in + i, upper + i, num_pixels - i, out + i); \ +} +// Predictor8: average TL T. +GENERATE_PREDICTOR_2(8, upper[i - 1]) +// Predictor9: average T TR. +GENERATE_PREDICTOR_2(9, upper[i + 1]) +#undef GENERATE_PREDICTOR_2 + +// Predictor10: average of (average of (L,TL), average of (T, TR)). +#define DO_PRED10(LANE) do { \ + const uint8x16_t avgLTL = vhaddq_u8(L, TL); \ + const uint8x16_t avg = vhaddq_u8(avgTTR, avgLTL); \ + const uint8x16_t res = vaddq_u8(avg, src); \ + vst1q_lane_u32(&out[i + (LANE)], vreinterpretq_u32_u8(res), (LANE)); \ + L = ROTATE32_LEFT(res); \ +} while (0) + +static void PredictorAdd10_NEON(const uint32_t* in, const uint32_t* upper, + int num_pixels, uint32_t* out) { + int i; + uint8x16_t L = LOADQ_U32_AS_U8(out[-1]); + for (i = 0; i + 4 <= num_pixels; i += 4) { + const uint8x16_t src = LOADQ_U32P_AS_U8(&in[i]); + const uint8x16_t TL = LOADQ_U32P_AS_U8(&upper[i - 1]); + const uint8x16_t T = LOADQ_U32P_AS_U8(&upper[i]); + const uint8x16_t TR = LOADQ_U32P_AS_U8(&upper[i + 1]); + const uint8x16_t avgTTR = vhaddq_u8(T, TR); + DO_PRED10(0); + DO_PRED10(1); + DO_PRED10(2); + DO_PRED10(3); + } + VP8LPredictorsAdd_C[10](in + i, upper + i, num_pixels - i, out + i); +} +#undef DO_PRED10 + +// Predictor11: select. +#define DO_PRED11(LANE) do { \ + const uint8x16_t sumLin = vaddq_u8(L, src); /* in + L */ \ + const uint8x16_t pLTL = vabdq_u8(L, TL); /* |L - TL| */ \ + const uint16x8_t sum_LTL = vpaddlq_u8(pLTL); \ + const uint32x4_t pa = vpaddlq_u16(sum_LTL); \ + const uint32x4_t mask = vcleq_u32(pa, pb); \ + const uint8x16_t res = vbslq_u8(vreinterpretq_u8_u32(mask), sumTin, sumLin); \ + vst1q_lane_u32(&out[i + (LANE)], vreinterpretq_u32_u8(res), (LANE)); \ + L = ROTATE32_LEFT(res); \ +} while (0) + +static void PredictorAdd11_NEON(const uint32_t* in, const uint32_t* upper, + int num_pixels, uint32_t* out) { + int i; + uint8x16_t L = LOADQ_U32_AS_U8(out[-1]); + for (i = 0; i + 4 <= num_pixels; i += 4) { + const uint8x16_t T = LOADQ_U32P_AS_U8(&upper[i]); + const uint8x16_t TL = LOADQ_U32P_AS_U8(&upper[i - 1]); + const uint8x16_t pTTL = vabdq_u8(T, TL); // |T - TL| + const uint16x8_t sum_TTL = vpaddlq_u8(pTTL); + const uint32x4_t pb = vpaddlq_u16(sum_TTL); + const uint8x16_t src = LOADQ_U32P_AS_U8(&in[i]); + const uint8x16_t sumTin = vaddq_u8(T, src); // in + T + DO_PRED11(0); + DO_PRED11(1); + DO_PRED11(2); + DO_PRED11(3); + } + VP8LPredictorsAdd_C[11](in + i, upper + i, num_pixels - i, out + i); +} +#undef DO_PRED11 + +// Predictor12: ClampedAddSubtractFull. +#define DO_PRED12(DIFF, LANE) do { \ + const uint8x8_t pred = \ + vqmovun_s16(vaddq_s16(vreinterpretq_s16_u16(L), (DIFF))); \ + const uint8x8_t res = \ + vadd_u8(pred, (LANE <= 1) ? vget_low_u8(src) : vget_high_u8(src)); \ + const uint16x8_t res16 = vmovl_u8(res); \ + vst1_lane_u32(&out[i + (LANE)], vreinterpret_u32_u8(res), (LANE) & 1); \ + /* rotate in the left predictor for next iteration */ \ + L = vextq_u16(res16, res16, 4); \ +} while (0) + +static void PredictorAdd12_NEON(const uint32_t* in, const uint32_t* upper, + int num_pixels, uint32_t* out) { + int i; + uint16x8_t L = vmovl_u8(LOAD_U32_AS_U8(out[-1])); + for (i = 0; i + 4 <= num_pixels; i += 4) { + // load four pixels of source + const uint8x16_t src = LOADQ_U32P_AS_U8(&in[i]); + // precompute the difference T - TL once for all, stored as s16 + const uint8x16_t TL = LOADQ_U32P_AS_U8(&upper[i - 1]); + const uint8x16_t T = LOADQ_U32P_AS_U8(&upper[i]); + const int16x8_t diff_lo = + vreinterpretq_s16_u16(vsubl_u8(vget_low_u8(T), vget_low_u8(TL))); + const int16x8_t diff_hi = + vreinterpretq_s16_u16(vsubl_u8(vget_high_u8(T), vget_high_u8(TL))); + // loop over the four reconstructed pixels + DO_PRED12(diff_lo, 0); + DO_PRED12(diff_lo, 1); + DO_PRED12(diff_hi, 2); + DO_PRED12(diff_hi, 3); + } + VP8LPredictorsAdd_C[12](in + i, upper + i, num_pixels - i, out + i); +} +#undef DO_PRED12 + +// Predictor13: ClampedAddSubtractHalf +#define DO_PRED13(LANE, LOW_OR_HI) do { \ + const uint8x16_t avg = vhaddq_u8(L, T); \ + const uint8x16_t cmp = vcgtq_u8(TL, avg); \ + const uint8x16_t TL_1 = vaddq_u8(TL, cmp); \ + /* Compute half of the difference between avg and TL'. */ \ + const int8x8_t diff_avg = \ + vreinterpret_s8_u8(LOW_OR_HI(vhsubq_u8(avg, TL_1))); \ + /* Compute the sum with avg and saturate. */ \ + const int16x8_t avg_16 = vreinterpretq_s16_u16(vmovl_u8(LOW_OR_HI(avg))); \ + const uint8x8_t delta = vqmovun_s16(vaddw_s8(avg_16, diff_avg)); \ + const uint8x8_t res = vadd_u8(LOW_OR_HI(src), delta); \ + const uint8x16_t res2 = vcombine_u8(res, res); \ + vst1_lane_u32(&out[i + (LANE)], vreinterpret_u32_u8(res), (LANE) & 1); \ + L = ROTATE32_LEFT(res2); \ +} while (0) + +static void PredictorAdd13_NEON(const uint32_t* in, const uint32_t* upper, + int num_pixels, uint32_t* out) { + int i; + uint8x16_t L = LOADQ_U32_AS_U8(out[-1]); + for (i = 0; i + 4 <= num_pixels; i += 4) { + const uint8x16_t src = LOADQ_U32P_AS_U8(&in[i]); + const uint8x16_t T = LOADQ_U32P_AS_U8(&upper[i]); + const uint8x16_t TL = LOADQ_U32P_AS_U8(&upper[i - 1]); + DO_PRED13(0, vget_low_u8); + DO_PRED13(1, vget_low_u8); + DO_PRED13(2, vget_high_u8); + DO_PRED13(3, vget_high_u8); + } + VP8LPredictorsAdd_C[13](in + i, upper + i, num_pixels - i, out + i); +} +#undef DO_PRED13 + +#undef LOAD_U32_AS_U8 +#undef LOAD_U32P_AS_U8 +#undef LOADQ_U32_AS_U8 +#undef LOADQ_U32P_AS_U8 +#undef GET_U8_AS_U32 +#undef GETQ_U8_AS_U32 +#undef STOREQ_U8_AS_U32P +#undef ROTATE32_LEFT + //------------------------------------------------------------------------------ // Subtract-Green Transform @@ -171,28 +522,30 @@ static WEBP_INLINE uint8x16_t DoGreenShuffle(const uint8x16_t argb, } #endif // USE_VTBLQ -static void AddGreenToBlueAndRed(uint32_t* argb_data, int num_pixels) { - const uint32_t* const end = argb_data + (num_pixels & ~3); +static void AddGreenToBlueAndRed(const uint32_t* src, int num_pixels, + uint32_t* dst) { + const uint32_t* const end = src + (num_pixels & ~3); #ifdef USE_VTBLQ const uint8x16_t shuffle = vld1q_u8(kGreenShuffle); #else const uint8x8_t shuffle = vld1_u8(kGreenShuffle); #endif - for (; argb_data < end; argb_data += 4) { - const uint8x16_t argb = vld1q_u8((uint8_t*)argb_data); + for (; src < end; src += 4, dst += 4) { + const uint8x16_t argb = vld1q_u8((const uint8_t*)src); const uint8x16_t greens = DoGreenShuffle(argb, shuffle); - vst1q_u8((uint8_t*)argb_data, vaddq_u8(argb, greens)); + vst1q_u8((uint8_t*)dst, vaddq_u8(argb, greens)); } // fallthrough and finish off with plain-C - VP8LAddGreenToBlueAndRed_C(argb_data, num_pixels & 3); + VP8LAddGreenToBlueAndRed_C(src, num_pixels & 3, dst); } //------------------------------------------------------------------------------ // Color Transform static void TransformColorInverse(const VP8LMultipliers* const m, - uint32_t* argb_data, int num_pixels) { - // sign-extended multiplying constants, pre-shifted by 6. + const uint32_t* const src, int num_pixels, + uint32_t* dst) { +// sign-extended multiplying constants, pre-shifted by 6. #define CST(X) (((int16_t)(m->X << 8)) >> 6) const int16_t rb[8] = { CST(green_to_blue_), CST(green_to_red_), @@ -219,7 +572,7 @@ static void TransformColorInverse(const VP8LMultipliers* const m, const uint32x4_t mask_ag = vdupq_n_u32(0xff00ff00u); int i; for (i = 0; i + 4 <= num_pixels; i += 4) { - const uint8x16_t in = vld1q_u8((uint8_t*)(argb_data + i)); + const uint8x16_t in = vld1q_u8((const uint8_t*)(src + i)); const uint32x4_t a0g0 = vandq_u32(vreinterpretq_u32_u8(in), mask_ag); // 0 g 0 g const uint8x16_t greens = DoGreenShuffle(in, shuffle); @@ -240,10 +593,10 @@ static void TransformColorInverse(const VP8LMultipliers* const m, // 0 r' 0 b'' const uint16x8_t G = vshrq_n_u16(vreinterpretq_u16_s8(F), 8); const uint32x4_t out = vorrq_u32(vreinterpretq_u32_u16(G), a0g0); - vst1q_u32(argb_data + i, out); + vst1q_u32(dst + i, out); } // Fall-back to C-version for left-overs. - VP8LTransformColorInverse_C(m, argb_data + i, num_pixels - i); + VP8LTransformColorInverse_C(m, src + i, num_pixels - i, dst + i); } #undef USE_VTBLQ @@ -254,6 +607,26 @@ static void TransformColorInverse(const VP8LMultipliers* const m, extern void VP8LDspInitNEON(void); WEBP_TSAN_IGNORE_FUNCTION void VP8LDspInitNEON(void) { + VP8LPredictors[5] = Predictor5_NEON; + VP8LPredictors[6] = Predictor6_NEON; + VP8LPredictors[7] = Predictor7_NEON; + VP8LPredictors[13] = Predictor13_NEON; + + VP8LPredictorsAdd[0] = PredictorAdd0_NEON; + VP8LPredictorsAdd[1] = PredictorAdd1_NEON; + VP8LPredictorsAdd[2] = PredictorAdd2_NEON; + VP8LPredictorsAdd[3] = PredictorAdd3_NEON; + VP8LPredictorsAdd[4] = PredictorAdd4_NEON; + VP8LPredictorsAdd[5] = PredictorAdd5_NEON; + VP8LPredictorsAdd[6] = PredictorAdd6_NEON; + VP8LPredictorsAdd[7] = PredictorAdd7_NEON; + VP8LPredictorsAdd[8] = PredictorAdd8_NEON; + VP8LPredictorsAdd[9] = PredictorAdd9_NEON; + VP8LPredictorsAdd[10] = PredictorAdd10_NEON; + VP8LPredictorsAdd[11] = PredictorAdd11_NEON; + VP8LPredictorsAdd[12] = PredictorAdd12_NEON; + VP8LPredictorsAdd[13] = PredictorAdd13_NEON; + VP8LConvertBGRAToRGBA = ConvertBGRAToRGBA; VP8LConvertBGRAToBGR = ConvertBGRAToBGR; VP8LConvertBGRAToRGB = ConvertBGRAToRGB; |